Speaker
Dr.
Masahiro Komatsu
(Nagoya University, JAPAN)
Description
The OPERA experiment is designed to prove neutrino oscillations in the
nu_mu to nu_tau channel through the direct observation of the tau lepton
in tau neutrino charged current interactions. The experiment has
accumulated data for five years, from 2008 to 2012, with the CERN
Neutrinos to Gran Sasso (CNGS), an almost pure nu_mu beam.
In the last two years, a very large amount of the data accumulated
in the nuclear emulsions has been analyzed. The latest results on oscillations
with the increased statistics, which include a fourth tau neutrino candidate event, will be presented.
Given the extremely low expected background, this result
corresponds to the observation of the oscillation process with a four
sigma level significance.
Primary author
Dr.
Masahiro Komatsu
(Nagoya University, JAPAN)
